Exercise is beneficial after a heart attack, but only if you keep exercising.

An interesting six paragraph article from the excellent NY Times Health section.

 Vital Signs – Exercise Helps After Heart Attack, as Long as It Continues – NYTimes.com

“Cardiac rehabilitation is cheap,” said Dr. Margherita Vona, the lead author and director of cardiac rehabilitation at a clinic in Glion-sur-Montreux, Switzerland, “but the price of losing its benefits is high. It’s important to educate patients about exercise, and essential that they continue for the long term.”